SOLUTION: A commercial jet has four engines. For an air craft in flight to land safely, at least two engines would be working condition. Each engine has an independent proabability of 92%. w

Question 1148849: A commercial jet has four engines. For an air craft in flight to land safely, at least two engines would be working condition. Each engine has an independent proabability of 92%. what is the probability that an air craft in flight can land safely?
Answer by ikleyn(52803) (Show Source): You can put this solution on YOUR website!
.


Probability to land safely is the sum of these addends


    probability  of all 4 engines work properly,  PLUS

    probability some 3 engines work properly AND one not, PLUS

    probability some 2 engines work properly AND two others not.



The formula is

    P(land safely) =  +  +  = 

                   =  = 0.998075.     ANSWER

Solved.

Very practical problem !

Wish you and all participants of this forum safe landing (!)

RELATED QUESTIONS
A commercial jet aircraft has four engines. For an aircraft in flight to land safely, at... (answered by Fombitz)

A commercial jet aircraft has four engines. For an aircraft in flight to land safely, at... (answered by ikleyn,robertb)

A commercial jet aircraft has four engines. For an aircraft in flight to land safely, at... (answered by Theo,ikleyn)

A commercial jet aircraft has 4 engines. In order for an aircraft in flight to land... (answered by ikleyn)

each of the four engines on an airplane functions correctly on a given flight with... (answered by stanbon)

a) A city has four fire engines. For each fire engine the probability that it is... (answered by ikleyn)

A two-engine plane will land safely if at least half of it�s engines function properly.... (answered by Alan3354)

A plane has three engines—a central engine and an engine on each wing. The plane will... (answered by ikleyn)

A trimotor plane has three engines—a central engine and an engine on each wing. The... (answered by ikleyn)